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via Stack Overflow by rockstar_77
, 1 year ago
java.lang.NullPointerException at com.nag.library.database.BooksDAO.getAllBooks( at com.nag.library.service.BookService.getAllBooks( at com.nag.library.resource.BookResource.getBooks( at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at Source)